Least Common Multiple (LCM) of 120 and 55
The least common multiple (LCM) of 120 and 55 is 1320.
What is the Least Common Multiple (LCM)?
The LCM of two integers is the smallest positive integer that is divisible by both numbers. It is often used to find common denominators and solve problems involving periodic events.
Formula for LCM
The LCM of two numbers can be calculated using their GCD:
LCM(a, b) = |a × b| ÷ GCD(a, b)
How to Calculate the LCM of 120 and 55?
First, calculate the GCD of 120 and 55 using the Euclidean algorithm. Then use the formula above to find the LCM.
Step-by-Step GCD Calculation
| Step | Calculation |
|---|---|
| 1 | 120 ÷ 55 = 2 remainder 10 |
| 2 | 55 ÷ 10 = 5 remainder 5 |
| 3 | 10 ÷ 5 = 2 remainder 0 |
Examples of LCM Calculations
| Numbers | LCM |
|---|---|
| 79 and 50 | 3950 |
| 12 and 129 | 516 |
| 125 and 89 | 11125 |
| 127 and 200 | 25400 |
| 171 and 159 | 9063 |